Music-player exhaust-muffler.



H. A. G ALLY.V` MUSIC PLAYER EXHAUST'MUFFLEH` APPLCATION FILED JULY 2T. 191?.

1,252,373. Patented Ja.1,191s

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UNITED STATES PATENT OFFICE.

nonna'r A. GALLY, or CINCINNATI, oHIo, A'ssIGNoa 'ro THE BALDWIN COMPANY, oF

' CINCINNATI, oHIo.

MUSIC-PLAYER EXHAUST-MUFFLER.

To all wh'om it may concern.'

Beit known that I, ROBERT A. GALLI', a

citizen of the UnitedStates, and ,residing at Cincinnati, in the county of Hamilton and 'State of Ohio, have invented certain new and useful Improvements in Music-Player Exhaust-Mufflers, of'which the following is left end of a player piano, the left end or so called side of the case and one post of the back having been removed to expose the important parts of the present invention and the related parts of. the piano; the piano action being also removed.

-Above the'keybed 1` of the piano, case 2 `is a. music pla ing action 3 having its air service supplie through a hole 4 in the keybed 1, an air chest 5 belowy said hole having air connection by a pipe 6 to-'an air pumper means as 7, here sh'own as a box such as is commonly used when a power drive is used, as an electric motq'r.

An air service limiting device is shown,

consisting of a. rocking valve 8 adapted to releaseany overstrain or suction of the air supply induced by the pumper 7, allowing such extra suction to be drawn through said valve 8 from the outer air, bein;y controlled by any suitable means connected to the arm 9 of the shaftof said valve 8.

To reduce the noise of intake of air through valve 8, and also to deaden the sound of the operation of the pumper, which sound is carried through wind ways 6 and 5, a box l0 is built around the lower side of the valve 8 and a pipe 11 altaehed to a holeI in the bottom of said box. and preferably extended through a hole in the sound hoard 12 of the piano, and the .f'her end of said pipe 11 is connected to a muffler box or silencer 13.

The mufiier box 13 is preferably made. with a number of fiexihle and flaccid soft felt Specleation o! Letters latent.

, said inlet Patented Jan. 1, 1918.

Application tiled-July 27, 1917. `Seria1No. 183,122;V

riies 14 alternately extended from two opposite sides of the box but not entirely across' -the box, thus leaving a zigzag passage for the air, the turns of said air in said passage being around sound deadening soft corners. An entry at the top of the box 13 admits the surplus air to satisfy the demands of the pumper 7 beyond the needs of the operation ofthe player action 3.

The muiiler 13 novir shown is very useful for quieting the air ow when placed in any other position than to the rear of the sound board, but this muier, or any other, or any waste air connection from the air service sound-boar and a muling means combined with said inlet.

`2. A piano including a vertical soundboard; wind inducing devices in front of said sound board, and air connection from said wind inducingdevices in front of said sound board, through said sound-board to 'the rear thereof, andan inlet to said connection positioned at the rear of said soundboard, and a muiilin'g means combined with saidinlet. f y

3. A piano includinga vertical soundhoard; wind inducing devices in front of said sound-board.l and air connection from said wind inducingy devices iu from4 of .said sound-board to the rear of said sound-board. anrl a surplus air relief port to the said uind inducing devices. said surplus air relief port combined with said air conneei'ion that leads to the rear of said souud-boari'l.

4. A piano including a. vertical soundhoard: wind inducing devices in front oi said sound-board. and air connr-clion from said wind inducing devices in front of said ".souurl-l'mard through said sound-hoard to the rear thereof. and a surplusair relief pori lo ,the said wind inducing devices. .said sul-plus au' relief port combined with said ositioned at the rear of saidair connections that leads to the rear of said sound-board. l

5. A piano including a vertical soundboard; Wind inducing devices in front of said sound board, and an air surplus valve combined with said wind inducing devices in front of said sound-boardend air connection from said air surplus valve and led to the rear of said sound-board and e port to said connection at the rear of said soundboard.

6. A piano Y,including u vertical sound; board; Wind linducin devices in front of said sound-board, an air connection from said Wind inducing devices in front of said sound-board, through said sound-board .to the rear thereof, an air surplus valve combined with said Wind inducing devices in front 'of said sound-board, and air connec- 4said Wind inducing devices in front of said sound-board, through said sound-board to the rear thereof, an air surplus valve combined with said Wind inducing devices in front of said sound-board, and air connection from said surplus valve and led to the rear of said sound-board, and a muiing means combined with said air connection at the rear of sald sound-board.

RoBT. A. GALLY.I Y 

